Updated openstack/openstack
Project: openstack/neutron  6c38103e095dbf107bdb199979be8e5e909d7e74

ML2 Type Driver refactor part 2

This commit builds on top of part 1 to introduce support for creating
dynamic network segments in ML2.

Change-Id: I399e1569baae6f24054aac15c4c51a2e44a20e5b
Partially implements: Blueprint ml2-type-driver-refactor